Lake Tahoe is experiencing large-scale shifts in ultraviolet radiation (UV) as climate change intensifies wet and dry extremes in the region. That is according to a study led by the University of California, Davis’ Tahoe Environmental Research Center and co-leading collaborator Miami University in Ohio.
For the study, published in ASLO, the journal of the Association for the Sciences of Limnology and Oceanography, scientists analyzed an 18-year record of underwater irradiance at Lake Tahoe, which is renowned for its clear blue waters. They found up to a 100-fold difference in UV radiation between a wet and dry year.
These large fluctuations were associated with wet and dry extremes in the local climate, which caused variations in particulate matter and colored dissolved organic matter in the lake…